Flue



Dec. 20, 1938. G. SLAYTER ET AL 2,140,773

FLUE

Filed May 17, 1957 INVENTORS Games SIayfu Howard W Collins 7 ATTORNEY. 3

Patented Dec. 20, 1938 UNITED STATES PATENT orrlce FLUE tion of OhioApplication May 17, 1937, Serial No. 143,204

3 Claims.

This invention relates generally to a flue construction and moreparticularly to a flue assembly embodying a lining in the form of tiles.

One of the principal objects of the present invention resides insupporting the lining within the flue by resilient means effective tocompensate for expansion of the lining. With this arrangement crackingor breaking of the lining is prevented and effective operation of theflue under all conditions is insured.

A further object of the present invention con sists in the provision ofa lining having a cross sectional area less than the cross sectionalarea of the flue and held in the flue in spaced relation to the innersurfaces of the latter by means of a filler of sufiicient resiliency toafford the necessary expansion of the lining relative to the flue.

A still further object of the applicants invention is to provide aresilient fireproof spacing means between a flue and a lining capable ofbeing compressed upon expansion of the lining relative to the flue andpossessing the required body to hold the lining centrally in the flue.

The foregoing as well as other objects will be made more apparent as thedescription proceeds.

In the drawing:

Figure 1 shows a portion of a house with an assembled chimney embodyingthe invention;

Figure 2 is a cross section taken on line 22 of Figure 1;

Figure 3 is a cross section taken on line 3-3 of Figure 2;

Figure 4 is a perspective view of a top portion of a chimney block, and

Figure 5 is a perspective View of a bottom portion of a chimney block.

Although the present invention is capable of many and diversified uses,nevertheless it finds particular utility when employed in connectionwith a chimney construction, and such specific adoption is shown anddescribed herein.

In detail, the chimney construction illustrated comprises a flue Ihaving a passage N therethrough for the flow of hot gases from theassociated combustion chamber (not shown) and is formed of a pluralityof apertured blocks l2 cemented or otherwise united together with theopenings therethrough in alignment with each other to provide thepassage H. In accordance with common practice, the flue is provided witha lining 13 in the form of tiling and, in the present instance, a tileof suitable material is arranged in each of the blocks [2 and is shownas being of the same length as the block. The cross sectional area ofthe lining I3 is sufficiently less than the cross sectional area of thepassage ll so that when arranged within the passage II,

a space I4 exists between the inner sides of the block and the adjacentsides iii of the lining. A resilient fireproof material I1 is 5 packedor otherwise deposited in the space M, and this material may be asbestospaper, mineral Wool, glass wool or the like. In any event, this materialmust possess sufiicient resiliency to afford the compression required topermit the expansion of the lining l3 relative to the blocks I2 when hotgases are directed through the flue, and, at the same time, the materialmust have sufiicient body to hold the lining centrally within the flue.

It will be evident from the above that the cracking of linings caused byexpansion within a rigid flue casing will be eliminated. Also, the aboveconstruction will add materially in decreasing the amount of heatradiating from the 20 lining through to the flue because of theseparation of the two by the porous filler.

It will be noted from Figures 4 and 5 that the bottom I8 of the liningI3 is allowed to extend a short distance beyond the bottom IQ of theblock, in order to provide a recess in the opposite end 20 of the block.This arrangement allows for easy and proper alignment of the blocks whenthey are assembled, for the extending portion 2! of the lining of theupper block will seat in the recess 22 of the lower block. This, ofcourse, will be extremely important when the blocks have tapered orirregular outer edges.

It will be apparent from the foregoing description that numerousmodifications within the scope of the applicants invention will bepossible from this disclosure, and the applicants reserve the right tomake such changes in the detail of construction and application as mayfall within the purview of the appended claims.

What we claim as our invention is:

1. A flue construction consisting of a plurality of superimposedsectional flue units, each unit comprising an exterior block memberhaving a passage therethrough, a frangible lining member also having apassage therethrough and disposed within the first mentioned passage,the cross section of said lining member being less than that of saidfirst mentioned passage, and a resilient fireproof filler within thespace between said block and said lining to resiliently support saidlining member within said block member.

2. A flue construction consisting of a plurality of superimposedsectional flue units, each unit comprising an exterior block memberhaving a 55 passage therethrough, a frangible lining member also havinga passage therethrough, the cross section of said lining member beingless than that of said first mentioned passage, said lining member beingdisposed within the first mentioned passage in a manner to allow one endthereof to project beyond one end face of said block member, and aresilient fireproof filler within the space between said block and saidlining to resiliently support said lining member within said blockmember.

